靖边油田长4+5段储层特征及分类评价  

Characteristics and Classification Evaluation of Chang 4+5 Reservoir in Jingbian Oilfield

作　　者：戴亚威 李爱荣[1] 武富礼[1] 袁珍[1] 谢红兵 DAI Yawei;LI Airong;WU Fuli;YUAN Zhen;XIE Hongbing(School of Earth Sciences and Engineering Shaanxi Key Laboratory of Petroleum Accumulation Geology,Xi′an Shiyou University,Xi′an 710065,China;Beijing ZK Shining Technology Development Co.Ltd.,Beijing 100083,China)

机构地区：[1]西安石油大学、地球科学与工程学院陕西省油气成藏地质学重点实验室,西安710065 [2]北京中科鑫宇科技发展有限公司,北京100083

出　　处：《重庆科技学院学报（自然科学版）》2023年第2期14-20,共7页Journal of Chongqing University of Science and Technology：Natural Sciences Edition

基　　金：国家科技重大专项“鄂尔多斯盆地南部长6油层组地层水与油气富集规律研究”(2017ZX05005-002-004)。

摘　　要：分析鄂尔多斯盆地长4+5段储层特征,并为其构建储层分类综合评价新标准。研究发现:储层岩性以长石砂岩为主,其中填隙物有绿泥石、伊蒙混层和方解石等;储集空间以粒间孔和溶蚀孔为主,总面孔率平均为5.57%;喉道类型以片状和弯状为主,孔喉组合类型为小—中孔粗喉型,属于低孔特低渗透致密砂岩储层。基于多因素综合条件分析,将长4+5段储层划分为优质储层、中等储层和差储层等3类。The characteristics of Chang 4+5 reservoir in Ordos Basin are analyzed,and a comprehensive evaluation standard for reservoir classification is built in this paper.It is found that the lithology of the reservoir is mainly arkose,and the interstitial materials are chlorite,illite smectite mixed layer and calcite.Intergranular pores and dissolution pores are the main reservoir,and the total face rate is 5.57%on average.The throat type is mainly sheet and curved throat,and the pore throat combination type is small-medium pore coarse throat type,belonging to low-medium pore ultra-low permeability tight sandstone reservoir.The Chang 4+5 reservoir is divided into high quality reservoir,medium reservoir and poor reservoir according to the multi-factor conditions.

关 键 词：鄂尔多斯盆地 靖边油田 储层特征 储层物性 储层分类 

分 类 号：P618[天文地球—矿床学]